TY - CPAPER AU - Milan Mikolas TI - ROTARY PERCUSSIVE DRILLING WITH SUBMERSIBLE DRILLING HAMMERS AND OTHER METHODS OF DRILLING WORK IN QUARRY OPERATIONS T2 - SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 17th International Multidisciplinary Scientific GeoConference SGEM2017, Science and Technologies in Geology, Exploration and Mining PY - 2017 SP - 797 EP - 804 DO - 10.5593/sgem2017/13/s03.101 PB - STEF92 Technology ER -